ABB Error 20511 — Soft-start relay open

What it means · Ce que ça veut dire

Soft-start relay open — ABB robot hardware event on the Soft-start relay open (IRC5). Specific to this controller generation. Severity: Major. Field diagnosis below (French); your robot's own manual remains authoritative.

The Soft-start relay (KM3) should be closed when the motor relays (KM1/KM2) are closed. Le texte constructeur de ce code n'existe qu'en anglais dans les manuels ABB dont il provient. Il est reproduit tel quel ci-dessus ; le manuel de votre robot fait foi.

What to check · Que vérifier

• Inspect the Soft-start relay open, its wiring and connections first.
• Match this code against your robot's event-log timeline before swapping parts.
• Follow the French field checks below — they are the tested sequence for this fault.
• Check relay KM3.

Frequently asked · Questions fréquentes

What does ABB error 20511 mean?

ABB 20511 (“Soft-start relay open”): Soft-start relay open — ABB robot hardware event on the Soft-start relay open (IRC5). Specific to this controller generation. Severity: Major. Field diagnosis below (French); your robot's own manual remains authoritative.

How do you troubleshoot ABB error 20511?

Inspect the Soft-start relay open, its wiring and connections first. Match this code against your robot's event-log timeline before swapping parts. Follow the French field checks below — they are the tested sequence for this fault.

Related codes / Codes liés